CAJ | 학술논문

　　以磷高效基因型水稻屉优418、辽优2005和磷效低基因型培杂茂三为材料，采用水培试验，分别从根系形态学，磷吸收、利用和运转效率等方面进行了研究，探讨了不同基因型水稻磷素营养差异的机理，结果表明，磷高效基因型水稻是磷吸收效率、运转效率和利用效率高的结果。较大的根体积、根总吸收面积、活跃吸收面积、根系活力， Km、Cmin小，Imax大等是水稻对磷高效吸收的特征。但基因型不同，特征也有区别，本试验中屉优418对磷高的吸收效率主要是由于根系强大，Imax大所致，而辽优1025高的磷吸收效率则主要缘于根总吸收面积、活跃吸收面积大，根系活力强。
　　이린고효기인형수도체우418、료우2005화린효저기인형배잡무삼위재료，채용수배시험，분별종근계형태학，린흡수、이용화운전효솔등방면진행료연구，탐토료불동기인형수도린소영양차이적궤리，결과표명，린고효기인형수도시린흡수효솔、운전효솔화이용효솔고적결과。교대적근체적、근총흡수면적、활약흡수면적、근계활력， Km、Cmin소，Imax대등시수도대린고효흡수적특정。단기인형불동，특정야유구별，본시험중체우418대린고적흡수효솔주요시유우근계강대，Imax대소치，이료우1025고적린흡수효솔칙주요연우근총흡수면적、활약흡수면적대，근계활력강。
Solution culture was conducted to study on the aspects ,such as root morphology,Puptake efficien-cy,Putilization and translocation efficiency ,et al.The mechanism of the difference in Pefficiency of different rice genotypes was probed.The results of the study are as followed:Pefficiency of rice depended on co-ordination of P absorption efficiency,utilization and translocation efficiency;The rice genotypes with higher Puptake efficiency were characterized by more extensive root systems coupled with its higher total uptake area ,active uptake area higher root activity and desirable kinetic parameters of Puptake ,showing lower Km and Cmin ,but longer I max values.However, the characteristics were different among genotypes .In this experiment,the higher P uptake efficiency of Tiyou 418 depended on more extensive root systems and longer I max value.But the higher Puptake efficiency of Liaoyou 1025 mainly resulted from larger total uptake area,active uptake area and higher root activity .